You can be a physick without needing to be an apothecary. You could take herb garden to supplement the herbs you use to heal others of special effects (such as cleave, venom, weakness, etc) if you’re taking to the battlefield. You could take business instead of herb garden if you just want to buy herbs, but buying them could be expensive (both in time looking for someone selling at a reasonable rate, and the price of the herbs), especially if certain ones are in high demand. You might offset the cost of herbs by telling your group to supply you with herbs you’ll need to heal them during battles.
If you want to save your coin, you could stick to the Anvil hospital (I highly recommend their new physick briefing, it’s the only new player briefing that I have attended) for physick work, which working in the Anvil hospital can be exciting in its own way; and you won’t need to buy armour and LARP-appropriate weapons, which you’d need for the battlefield as physick, and save some of your RL money.
Yes, talk to your egregores for your nation; don’t do what I did and miss nearly all the new player everythings and not speaking to the egregores until the end of the summit… there’s a lot that I’ve lost out on due to never making the briefings.
Also, being an apothecary doesn’t automatically generate herbs; it only allows you to take herbs and turn them into potions, philtres, elixirs, and salves. Your resource (forest, mine, fleet, business, farm, mana site, congregation, military unit, or herb garden) is how you can generate herbs, ores, and money.